fix

Module1/Lexer.cs

@@ -214,16 +214,16 @@ namespace Lexer
         }
         public override bool Parse()
         {
-            bool isChar = false;
+            bool isDigit = false;
 
             NextCh();
 
             while (currentCharValue != -1)
             {
-                if (char.IsDigit(currentCh) ^ isChar || currentCh == ' ')
+                if (char.IsDigit(currentCh) ^ isDigit || currentCh == ' ')
                     Error();
 
-                isChar = !isChar;
+                isDigit = !isDigit;
                 NextCh();
             }
 
@@ -533,7 +533,7 @@ namespace Lexer
             bool flag_after_final = false;
 
             NextCh();
-            if (currentCh == ' ')// 
+            if (currentCh == ' ')
                 Error();
             else if (currentCh == '/')
             {
@@ -638,7 +638,7 @@ namespace Lexer
                     builder.Clear();
                     dot_flag = true;
                 }
-                if (currentCh != '.')
+                else
                     builder.Append(currentCh.ToString());
 
                 NextCh();